One of the detained pair is a man in his forties, according to Bergensavisen's report.

Police lawyer Linn Revheim told the newspaper that she did not wish to comment on the behind-closed-doors preliminary court procedure.

University Museum of Bergen director Henrik von Achen told broadcaster NRK he was pleased at the news.

“I was informed a few minutes ago. We think it is positive, because it shows police are working actively on the case even though [the theft] happened a long time ago. We hope this means there is a better chance of getting the items back – that is the only thing that is important for us,” Achen said.

Investigators found two different DNA traces at the museum following the break-in, but these did not register any matches on the police database, reports NRK.